I know this has been probaly has been asked/posted before....
But here it go's , My 66 FJ40 has the OEM Koito headlamps still and would like to up grade to Halogen I bought a set of Wagner's H6024 for my FJ55 but never used them is ther any upgrade I need to do as to use the Halogen's ? I know thay fit.
THANKS JC

THANKS JC